Southern Hemisphere geophysics scores big Chilean | Australian Markets
Southern Hemisphere Mining’s deep penetrating magneto-telluric (MT) geophysical survey has kicked up a doubtlessly important goal 500 metres in diameter and to a depth of 500m to the west of its Ferro copper deposit at its Llahuin project in Chile.
The giant low-resistivity anomaly recognized from the MT survey is along with the current reveal of a potential giant copper-gold porphyry deposit on the company’s Curiosity goal, which was additionally recognized from the MT survey. Both targets are half of Southern Hemisphere’s flagship Llahuin copper-gold-molybdenum project, 350 kilometres north of Santiago in Chile.
Management is especially fascinated with a deep zone of low-resistivity outlined by 3D inversion modelling of the MT dataset at Ferro West, its newly named goal.
It subjected the world to a detailed floor geological mapping program, which recognized black copper wad oxides at floor.
The company believes that is a constructive signal as black oxides had been additionally seen at Ferro South during drill pad construction previous to the Ferro South extension discovery from a 2024 drilling program.
The magneto-telluric survey is including to the understanding of Llahuin and the place the massive prizes are doubtlessly hidden. This method has been very profitable in different discoveries, so we’re wanting ahead to testing this all at Llahuin with drill planning underway.
Management believes testing the newly outlined goal will require about six holes to be hammered into its diameter.
Previous management plunged a reverse circulation drill gap into the ground that prolonged into the low resistivity goal, intersecting low-grade copper.
The company says a sub-optimal drill method was employed on the historic gap, which is now being evaluated for additional drilling to focus on a deeper extension by way of the goal utilizing a diamond drill rig.
Southern Hemisphere expects to make important time and value financial savings if it utilises the prevailing gap, which has already been drilled to 190m depth.
An MT survey is an electromagnetic geophysical methodology for measuring {the electrical} resistivity of the earth’s sub-surface. The surveys had been used to determine some world-class copper porphyry deposits within the area, together with Atex Resources’ 61-square-kilometre Valeriano deposit in northern Chile.
Both 2D and 3D inversion fashions for the distribution of resistivity within the goal’s space typically point out zones of average to low resistivity.
Low resistivity signifies that a materials readily permits the circulation of electric present, that means the ground materials has high conductivity and should signify conductive ore deposits.
Deeper zones of average to low resistivity could point out the presence of conductive metallic sulphide mineralisation.
The company used a transportable X-ray fluorescence (pXRF) method to substantiate copper oxides within the floor black materials. The technology beams X-rays at a pattern to work together with its atoms, inflicting the atoms to emit attribute X-rays.
By analysing the X-rays emitted, it’s potential to determine the weather current and their estimated focus ranges.
The pXRF works fast and may present outcomes rapidly, which is a great benefit when figuring out within the area.
The historic drill pad the place the black copper oxides had been beforehand recognized has not been used and may very well be utilised for half of the deliberate drilling program.
Management is in search of quotes for the upcoming marketing campaign from skilled firms with a demonstrated historical past of drilling to depths of 2km to check the new goal and the deeper Curiosity copper-gold goal.
It says the configuration of the Curiosity MT goal is remarkably just like an MT goal on the giant Valeriano porphyry copper-gold deposit.
The Curiosity goal is within the Southern Porphyry prospect. The goal is 550m beneath the earlier Santa Maria gold workings and is about 1km in diameter and up to 2km deep.
The Curiosity goal is supported by a soil geochemistry anomaly at floor and two shallow drill holes that produced drill intervals of 164m at 0.16 per cent copper equal from 2m and 106m operating 0.13 per cent copper equal from 28m.
A 2m slice grading 1.45 per cent copper equal from 168m offers additional encouragement that Southern Hemisphere could also be onto one thing.
Southern Hemisphere’s current drilling program has sought so as to add scale to a copper useful resource that consists of 169 million tonnes grading 0.4 per cent copper equal for 680,000t of copper equal materials, which was measured beneath the 2004 JORC tips.
Results from a current program comprised a giant 128m hit stretching from a depth of 16m, which returned a grade of 0.41 per cent copper equal ending in mineralisation. This included a 32m part going 0.57 per cent copper equal from 66m.
Southern Hemisphere plans to realize an up to date 2012 JORC-compliant mineral useful resource this 12 months. With many thick intervals from floor or shallow depths, the company feels it has a compelling alternative to bolster the useful resource with near-surface tonnes and supply for a potential open pit operation on the project.
The use of geophysics is proving to be a constructive transfer for Southern Hemisphere because it kicks up newly recognized potential targets that present the chance for the company to doubtlessly grow Llahuin into a important project.
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